Oct., 1923] SNELL — EFFECT OF HEAT UPON FUNGI 405 
Bearing of these Results upon Kiln-drying of Lumber 
and Structural Timber 
The results obtained also throw some light on the effect of kiln-drying of 
lumber upon the mycelium of fungi within the wood. It is fair to assume 
that the results with these fungi will apply to the kiln-drying of coniferous 
timbers. The fungi under discussion in this paper cause most of the serious 
damage to worked timber, and hence the results obtained are directly 
Table i. The effect of dry heat upon the mycelium of Lenzites sepiaria, L. trabea, Trametes 
serialis, T. carnea, and Lentinus lepideus within f- by f- by i-inch Sitka-spruce blocks 3 4 
3 Each plus or minus sign refers to a single test of 10 tubes. A plus sign means that 
some growth was obtained, whether in one or all ten tubes, but in all but a very few cases 
it means growth in more than six of the 10 tubes of a single test. 
4 Test not satisfactory. Repetition may show growth. 
